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TPS2051BDRG4

TPS2051BDRG4 USB Power Switch, 70 mOhm, 500 mA, 8-SOIC

MPNTPS2051BDRG4
End of Life

Texas Instruments TPS2051BDRG4, USB power-distribution switch, high-side, 70 mOhm Rds(on), 500 mA output, 2.7 V to 5.5 V load, -40°C to 125°C, 8-SOIC, Tape & Reel.

$0.9400Ref. price · indicative, final on quote
Texas Instruments TPS2051BDRG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TPS2051BDRG4 specifications
ParameterValue
Input typeNon-Inverting
Output typeN-Channel
TypeGeneral Purpose
MountingSurface Mount
Voltage - load2.7V ~ 5.5V
Voltage - supply (Vcc (Vdd))Not Required
Output current500mA
I/O channels1
InterfaceOn/Off
Operating temperature-40°C~125°C(TJ)
PackageTape & Reel (TR)
FeaturesStatus Flag
Rds on70mOhm
Case8-SOIC (0.154\", 3.90mm Width)
Fault protectionCurrent Limiting (Fixed), Over Temperature, UVLO
Output configurationHigh Side
Ratio - Input:Output1:1

Product details

High-side switch with 70 mOhm pass element

Its 70 mOhm typical on-resistance at 5 V input keeps the voltage drop under 35 mV at 500 mA, which matters when the downstream load has a tight input-voltage tolerance.

500 mA output with fixed current limit

The output is rated for 500 mA continuous, with a fixed current-limiting circuit that clamps the load current during a fault. Unlike adjustable-limit switches, this part does not require an external sense resistor or set resistor. Fault protection includes over-temperature shutdown and undervoltage lockout (UVLO); the open-drain Status Flag (active low) asserts when the switch is in current limit or thermal shutdown, letting a host controller detect the fault.

The 8-SOIC package's thermal pad (if present on the PCB layout) helps keep the junction below the thermal-shutdown threshold under sustained 500 mA load.

The Tape & Reel (TR) packaging option is suited for automated pick-and-place assembly.

Frequently asked questions

Is TPS2051BDRG4 a direct replacement for TPS2051?

The TPS2051BDRG4 is a specific ordering code within the TPS2051 base product family. The 'BDRG4' suffix indicates the 8-SOIC package and Tape & Reel packaging. If your BOM calls for the TPS2051 in an 8-SOIC package and Tape & Reel format, this is the correct variant. Confirm the package code on your existing part marking before substituting.

What is the current limit of TPS2051BDRG4?

The TPS2051BDRG4 has a fixed current limit that clamps the output at 500 mA maximum. There is no external resistor to set the limit — the protection circuit is internal and non-adjustable. The Status Flag asserts when the current limit is active.